Piston-rod connection.



PATENTND DEO.- 18, 1906.

L. ANDERSON. N PISTON ROO CONNECTION. APPI'IOATION FILED MAR.2, 1906.

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UNITED STATES PATENT OFFICE.

LARS ANDERSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-THIRD TO HENRY S. MORTON, OF NEW YORK, N. Y., ONE-THIRD TO GEORGE W. STAHL, OF CHICAGO, ILLINOIS, AND ONE-THIRD TO TRIPLEX GAS JERSEY.

CORPORATION OF NEW PlSTON-ROD CONNECTION.

Speccation of Letters Patent.

Patented Dec. 18, 1906.

Application filed March 2, 1906. Serial No. 303.765.

T @ZZ whom, t Tit/ty con/cern:

Be it known that I, LARs ANDERSON, a citi- Zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Piston-Rod Connections, of which the following is a full, clear, and exact specification.

This invention relates to improvements in piston-rod connections, and more particuarly to the means for connecting the end of a piston-rod to its crank-shaft.

The object of the invention is to provide improved means for this purpose which will permit the rod to be quickly and efficiently connected to the crank.

A further object is to provide an improved simple and efficient means for tightening the connection, so as to compensate for and take up the wear of the boxes.

A further object is to provide improved simple and eflicient means for securing the ends of a plurality of rods to the crank, and which means may be readily moved out of engagement with and out of the way of the ends of the rod, so as to permit the latter to be readily detached without removing the fastening means.

A further object is to provide an improved device of this character which will be simple in construction, cheap to manufacture, and effective in operation.

T o the attainment of these ends and the accomplishment of other new and useful objects, as will appear, the invention consists in the features of novelty in the construction, combination, and arrangement of the several parts, as hereinafter more fully set forth and claimed, and shown in the accompanying drawings, illustrating an exempliiication of the invention, and in which- Figure 1 is an elevation, partly in section, of a crank and piston-rod connection constructed in accordance with the principles of this invention. Fig. 2 is a sectional view on line 2 2 of Fig. 1 looking in the direction of the arrows. Fig. 3 is a bottom plan view of the 1'etaining1ing. Fig. 4 is an end elevation of the end of one of the piston-rods, Fig. 5 is a front elevation of Fig. 4.

In the form of the invention shown the crank-shaft is preferably comprised of sections 11, supported and j ournaled in suitable bearings, (not shown,) and keyed or otherwise secured to the adjacent ends of each of these sections is a disk or fly-wheel 12, and these disks or wheels are connected at a point remote from the center thereof by means of a suitable pin 13. This pin is preferably provided with reduced tapering extremities 14, forming shoulders 15. These reduced or tapering extremities 14 are adapted to enter suitable bearings 16 in the disks or wheels 12, with the shoulders thereof preferably engaging aseat 17, and said pin is held from displacement by means of nuts 18, engaging the extremities thereof on the opposite side of the disks or wheels 12.

The pin 13 is provided with a longitudinal depression or recess 19, and the wheels or disks 12 are also provided with a groove or key-seat 20, which extends through the outer face thereof, and these grooves or recesses are adapted to register and receive a pin or key 21, whereby the disks or wheels 12 and the pin 13 are locked against independent movement with relation to each other.

The disks or wheels 12 are provided on their adjacent faces with a projecting interiorly-threaded rim 22, arranged eccentric to the shaft-sections 10 11 and surrounding the pin 13. If desired, the wheels 12 may be recessed, with the walls thereof provided with screw-threads, or an independent interiorlythreaded ring may be provided and secured to the faces of the wheels in any suitable manner. An interiorly-threaded sleeve or collar 23, provided with a lateral projecting circumferential flange 24, is adapted to enter the recess or stand within the projecting rim 22, with the flanged portion resting against the bottom of the recess or face of the wheel 12. j The external diameter of the flange or projecting portion 24 is somewhat less than the internal diameter of the recess or space formed by the rim 22. A ring 26 is provided with an interiorly-projecting portion 27, forming a shoulder 28, and said shoulder is of a height equal to the height or thickness of the iange 24 on the sleeve or collar 23. This ring 26 is adapted to rest against the face 25 of the Wheel 12 and be-. tween the wall of the recess or inner face of the projection 22 and the periphery of the IOO flange 24, with the shoulder 28 thereof engaging the periphery of the flange and the projecting portion 27 extending over the face thereof, and said ring 26 is prevented from independent rotation by means of suitable pins 29 passing through apertures 30 therein and into the wheel 12, as will be understood. if desired, this ring may also be provided with peripheral threads to engage the threads on the member or rim 22.

A lock-nut or ring 31, provided with peripheral threads, is adapted to engage the threads on the wall of the recess or projecting rim 22 above the ring 26 tor preventing the latter from becoming displaced, and said ring 3l is provided with suitable apertures or depressions 32, adapted to receive the ends of a Spanner-wrench, whereby the said ring may be adjusted as desired.' It will thus be seen that the sleeve or collar 23 has a loose or swivel connection with the disk or wheel 12 and may be rotated in any suitable manner, preferably by means of a suitable wrench engaging apertures 33 therein or by means of the fingers gripping` a milled or roughened portion 34 of its periphery.

A suitable sleeve or collar 35 surrounds the bearing 1.6 and is of a diameter slightly less than the internal diameter of the sleeve or collar 23,-and said latter sleeve or collar 35 is provided with peripheral threads adapted to engage the internal threads of the sleeve or collar 23. The lower portion of the sleeve or collar 35 is provided with a notch or recess adapted to cooperate with a corresponding groove or recess in the bearing 16, and a key 36 is adapted to be seated in the cooperating grooves, and said key serves to permit the collar or sleeve 35 to have a longitudinal movement with relation to the bearing 16 and the sleeve or collar 23 and yet prevent a rotary movement of said sleeve or collar 35 with respect to the bearing 16. rl`hus when the sleeve or collar 23 is rotated the sleeve or collar 35 will be drawn back longitudinally on the bearing 16, and the height of the collar 23 is such that the collar 35 will recede and stand Within the sleeve or collar The interior of the upper portion of the sleeve or collar 35 is enlarged or flared, forming a circun'iferential interior inclined wall or face 37.

The ends ofthe bearings 16 preferably project slightly beyond the shoulders 15 ot the pin 13 for a purpose to be set forth.

Any number of piston-rods 3S and pistons may be employed in connection with this invention, but in this exemplication there are illustrated three, and each of these rods is providedv at its end adjacent the crank-pin 13 with a section of a box 39, which sections extend around the crank-pin 13, and each box is of such a size that when assembled there will be a space between the adjacent faces, so as to permit an oscillation with reference to each other as the crank-pin rotates. These boxes are constructed on an arc in cross-section, but are conical. or tapered longitudinally from a point adjacent the center toward their ends, as at 40. rlhese extremities taper to a diameter smaller than the diameter of the Haring or conical opening in the end of the sleeve or collar 35, and each of the boxings are of a length to permit the same to engage the crank-pin 13 and with its extremities between and in close proximity to the ends of the bearings 16, thereby preventing lateral displacement of the boxes. To the opposite ends of these rods are connected piston-heads which move in the cylinders 41.

Assuming the parts to be assembled and. in position as shown in Fig. 1., should the boxes 39 become worn all that is necessary is to turn the sleeve or collar 23, which will force the collar or sleeve 35 outward and the incline face or wall 37 farther up the incline portieri 40 of the boxes, which will tighten the boxes against the shaft. When it is desired to detach the rods, the collar 23 is rotated in an. opposite direction, causing the collar or sleeve 35 to be drawn back out or' engagement with the boxes 39 and into the sleeve or collar 23, so that the extremity of said collar 35 will clear the end of the boxes, thereby permitting the piston-rods to be readily removed.

lt is te be understood that it is not desired to be limited to the exact details of construction or arrangement of the several parts, as numerous changes may be made without dearting from the spirit of the invent-ion.

vWhat is claimed as new is- 1. In a device ojl the class described, the combination or' a crank and crank-pin, a piston-rod, a segmental box member thereon adapted to engage the pin, a collar rotatably mounted on. the crank and surrounding the pin, and means surrounding the pin and member for securing the latter in position, said means being connected to and adjustable by the collar in a longitudinal direction with relation to the pin. i

ln a device of the class described, the combination of a crank and crank-pin, a piston-rod, a segmental box member thereon adapted to engage the pin, a collar swiveled to the crank and surrounding the pin, means surrounding the pin and member for securing thelatter in position, said means being connected to and adjustable by Vthe collar, and means for preventing a rotary movement of the securing means.

3. In a device of the class described, the combination of a crank, a crank-pin, a collar swiveled to the crank and surrounding the pin, a second collar surrounding the pin,

means for preventing rotary movement of the second collar, a piston-rod, a segmental box member thereon adapted to engage the pin, and a connection between the two col- IOO IlO

lars, whereby the rotation of the outer collar will cause the inner collar to move into engagement with and surround the box member for securing the latter in position.

4. In a device of the class described, the combination of a crank, a crank-pin, a collar surrounding the pin, means engaging the collar for rotatably supporting the same on the crank, a second collar screwed to and standing within the first collar, a piston-rod, a segmental box member thereon adapted to engage the pin, and means whereby the rotation ofthe outside collar will force the second collar out of said first collar and cause the same to engage and surround the box member.

5. In a device of the class described, the combination of a crank, a crank-pin, a pistonrod, a segmental box member thereon adapted to engage the pin, interengaging collars surrounding the pin, one of said collars being provided with a peripheral flange, a shouldered ring secured to the crank and loosely engaging the flange, and means engaging the outer collar for causing said last-named collar to advance and surround the box member when the first collar is rotated.

6. In a device of the class described, the combination of a crank, a crank-pin, apistonrod, a segmental box member thereon adapted to engage the pin, and provided with tapering extremities, interengaging collars surrounding the pin, means for rotatably securing one of the collars to the crank, the other collar being provided with a conical seat, and means engaging said other collar, whereby said collar will be advanced when the first collar is rotated to cause the conical seat to surround and engage the tapering extremity of the box member.

7. ln a device of the class described, the combination of a crank, a crank-pin, a piston-rod, a segmental box member thereon adapted to engage the pin, interengaging collars, one of said collars surrounding and engaging the box member, means for rotatably supporting the other collar, and means whereby the first collar will be caused to move into the second collar and out of engagement with the box .member when said second collar is rotated.

S. ln a device of the class described, the

combination of a crank, a crank-pin, a piston, a segmental box member thereon adapted to engage the pin, and provided with tapering extremities, interengaging collars surrounding the pin, means for swiveling one of the collars to the crank, the other collar being provided with a conical seat adapted to surround and engage the extremities of the box member, and means for causing the second collar to move through the first collar when said first collar is rotated.

9. In a device of the class described, the combination of a crank, a crank-pin, a piston-rod, a segment box member thereon adapted to engage the pin, interengaging collars surrounding the pin, one of said collars being adapted to engage the box member, the other collar being provided with a peripheral flange, a ring engaging the flange and the crank, means for preventing rotation, and means for preventing displacement of the ring, and means for preventing rotation of the first collar, whereby said collar will be moved with respect to the second collar when said second collar is rotated.

10. In a device of the class described, the combination of a crank, a crank-pin, said crank being provided with a screw-threaded recess surrounding the pin, interengaging collars surrounding the pin, one of said collars being provided with a peripheral flange, said flange being of less diameter than the diameter of the recess, a ring within the recess, resting upon the fiange, and provided with a shouldered portion between the periphery of the flange and the wall of the recess, a peripherally-threaded ring engaging the threads of the recess and resting against the rst ring to prevent displacement thereof, said other collar being adapted to engage and surround the box member, and means for preventing rotation of the second collar, whereby said second collar will be advanced or retracted when the first collar is rotated.

ln testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 28th day of February, A. D. 190.6.

LARS ANDERSON.

/Vitnesses:

J. H. JooHUM, Jr., CHAs. H. SEEM. 

